<template>
	<div ref="lowEcharts" :style="{ height: height, width: width }"></div>
</template>

<script>
import * as echarts from 'echarts'
import T from './echarts-theme-T.js'
echarts.registerTheme('T', T)
const unwarp = (obj) => obj && (obj.__v_raw || obj.valueOf() || obj)

export default {
	...echarts,
	name: 'lowEcharts',
	props: {
		height: { type: String, default: '100%' },
		width: { type: String, default: '100%' },
		nodata: { type: Boolean, default: false },
		option: { type: Object, default: () => {} }
	},
	data() {
		return {
			isActivat: false,
			myChart: null
		}
	},
	watch: {
		option: {
			deep: true,
			handler(v) {
				unwarp(this.myChart).setOption(v)
			}
		}
	},
	computed: {
		myOptions: function () {
			return this.option || {}
		}
	},
	activated() {
		if (!this.isActivat) {
			this.$nextTick(() => {
				this.myChart.resize()
			})
		}
	},
	deactivated() {
		this.isActivat = false
	},
	mounted() {
		this.isActivat = true
		this.$nextTick(() => {
			this.draw()
		})
	},
	methods: {
		draw() {
			var myChart = echarts.init(this.$refs.lowEcharts, 'T')
			myChart.setOption(this.myOptions)
			this.myChart = myChart
			window.addEventListener('resize', () => myChart.resize())
		}
	}
}
</script>
